From mboxrd@z Thu Jan 1 00:00:00 1970 From: b32955@freescale.com (Huang Shijie) Date: Thu, 15 Nov 2012 17:11:42 +0800 Subject: [PATCH v2 2/3] serial: mxs-auart: add the DMA support for mx28 In-Reply-To: <50A4983F.8080407@bluegiga.com> References: <1351074456-25863-1-git-send-email-b32955@freescale.com> <1351074456-25863-3-git-send-email-b32955@freescale.com> <50A21613.6030709@bluegiga.com> <50A45F83.1010009@freescale.com> <50A4983F.8080407@bluegiga.com> Message-ID: <50A4B1CE.5070203@freescale.com> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org ? 2012?11?15? 15:22, Lauri Hintsala ??: > Hi, > > On 11/15/2012 05:20 AM, Huang Shijie wrote: >> ? 2012?11?13? 17:42, Lauri Hintsala ??: >>> Hi Huang, >>> >>> DMA support doesn't work with latest stable v3.6.5 or development >>> 3.7-rc5 kernels. I get following error message when I open the serial >>> port /dev/ttyAPP0: >>> >>> [ 48.730000] mxs-auart 8006a000.serial: step 1 error >>> [ 48.750000] mxs-auart 8006a000.serial: We can not start up the DMA. >>> >> I tested this patch set in imx28-evk board Rev C with >> linux-next-20121114. >> it works fine. >> >> Maybe you can try the linux-next code. > > I tested linux-next-20121114 on apx4devkit (imx28 based device) and I > got the same error message: > > # stty -F /dev/ttyAPP0 crtscts; microcom /dev/ttyAPP0 -s 115200 > [ 133.710000] mxs-auart 8006a000.serial: step 1 error > [ 133.720000] mxs-auart 8006a000.serial: We can not start up the DMA. Could you test this patch? thanks Huang Shijie -------------- next part -------------- A non-text attachment was scrubbed... Name: 0001-fix-patch.patch Type: text/x-patch Size: 2010 bytes Desc: not available URL: